/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: radial-gradient(ellipse at top, #0f1923 0%, #070b0f 100%);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: 24px 16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

/* ===== Panel Container ===== */
.panel {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ===== Sections (Glasmorphism) ===== */
.section {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 20px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.section-title {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 14px;
  padding-left: 4px;
}

/* ===== Button Group Grid ===== */
.button-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* Einzelner Button in voller Breite wenn ungerade Anzahl */
.button-group .btn:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

/* ===== Buttons ===== */
.btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 22px 16px;
  min-height: 80px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  cursor: pointer;
  color: #fff;
  font-family: inherit;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

/* Licht-Overlay für Glaseffekt */
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.btn-icon {
  font-size: 28px;
  line-height: 1;
}

.btn-label {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.9;
  letter-spacing: 0.3px;
}

/* ===== Button States ===== */
.btn:active {
  transform: scale(0.94);
}

.btn.active {
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.15), inset 0 0 12px rgba(255, 255, 255, 0.05);
}

/* Grüner Puls-Indikator bei aktivem Button */
.btn.active::after {
  content: '';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4cff88;
  box-shadow: 0 0 6px #4cff88;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ===== Farbvarianten ===== */
.btn.blue {
  background: linear-gradient(145deg, #0a3d7a, #1565c0);
  box-shadow: 0 4px 15px rgba(21, 101, 192, 0.3);
}
.btn.blue:active {
  box-shadow: 0 2px 25px rgba(21, 101, 192, 0.5);
}

.btn.cyan {
  background: linear-gradient(145deg, #006978, #00acc1);
  box-shadow: 0 4px 15px rgba(0, 172, 193, 0.3);
}
.btn.cyan:active {
  box-shadow: 0 2px 25px rgba(0, 172, 193, 0.5);
}

.btn.red {
  background: linear-gradient(145deg, #7a1a1a, #c62828);
  box-shadow: 0 4px 15px rgba(198, 40, 40, 0.3);
}
.btn.red:active {
  box-shadow: 0 2px 25px rgba(198, 40, 40, 0.5);
}

.btn.bluelight {
  background: linear-gradient(145deg, #0d47a1, #2979ff);
  box-shadow: 0 4px 15px rgba(41, 121, 255, 0.3);
}
.btn.bluelight:active {
  box-shadow: 0 2px 25px rgba(41, 121, 255, 0.5);
}

.btn.orange {
  background: linear-gradient(145deg, #c76a00, #ff9800) !important;
  box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
  color: #fff;
}
.btn.orange:active {
  box-shadow: 0 2px 25px rgba(255, 152, 0, 0.5);
}

.btn.emergency {
  background: linear-gradient(145deg, #b71c1c, #e53935);
  box-shadow: 0 4px 20px rgba(229, 57, 53, 0.4);
  min-height: 70px;
}
.btn.emergency:active {
  box-shadow: 0 2px 30px rgba(229, 57, 53, 0.7);
}

/* ===== Notruf-Sektion Highlight ===== */
.section-emergency {
  border-color: rgba(229, 57, 53, 0.2);
  background: rgba(229, 57, 53, 0.04);
}

/* ===== Blaulicht Overlay ===== */
.blaulicht-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: none;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 40px;
  background: #000;
}

.blaulicht-overlay.active {
  display: flex;
}

.blaulicht-overlay.active.mode1 {
  animation: flash-mode1 0.8s infinite;
}

.blaulicht-overlay.active.mode2 {
  animation: flash-mode2 1.2s infinite;
}

@keyframes flash-mode1 {
  0%, 49% { background: #003cff; }
  50%, 100% { background: #000; }
}

@keyframes flash-mode2 {
  0%, 10% { background: #003cff; }
  11%, 20% { background: #000; }
  21%, 30% { background: #003cff; }
  31%, 100% { background: #000; }
}

.btn-off {
  padding: 18px 40px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(145deg, #7a1a1a, #c62828);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(198, 40, 40, 0.5);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  z-index: 101;
}

.btn-off:active {
  transform: scale(0.94);
  box-shadow: 0 2px 30px rgba(198, 40, 40, 0.7);
}

/* ===== Anhalte-Signal Overlay ===== */
.anhalte-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  padding: 20px;
  background: #000;
}

.anhalte-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.led-text {
  position: relative;
  font-family: 'Courier New', monospace;
  font-size: clamp(48px, 15vw, 120px);
  font-weight: 900;
  color: #ff2200;
  text-align: center;
  letter-spacing: 8px;
  text-shadow:
    0 0 10px #ff2200,
    0 0 20px #ff2200,
    0 0 40px #ff0000,
    0 0 80px #cc0000;
  animation: led-glow 1s ease-in-out infinite alternate;
}

@keyframes led-glow {
  0% { opacity: 1; }
  100% { opacity: 0.75; }
}

/* ===== Responsive ===== */
@media (max-width: 360px) {
  .panel {
    gap: 18px;
  }
  .section {
    padding: 16px;
  }
  .btn {
    padding: 18px 12px;
    min-height: 70px;
  }
  .btn-icon {
    font-size: 24px;
  }
  .btn-label {
    font-size: 12px;
  }
}

@media (min-width: 500px) {
  body {
    align-items: center;
    padding: 32px;
  }
}